Bhagavad Gītā Chapter Nine Title
rājavidyā rājaguhya yogaḥ
The Yoga of Sovereign True Knowledge and Sovereign Mystery.rāja - a king, sovereign, chief or best of its kindvidyā - any knowledge whether true or false; knowledge of the soul or spiritual knowledge; true knowledgeguhya - mysteryyoga - the act of yoking
Commentaries and Reflections
Commentary by Paul Harvey:
The Yoga of the highest knowledge, the highest secret.